Former Cubs and Braves star Greg Maddux, known during a Hall of Fame career as “Mad Dog," added a new nickname to his resume — “Sound Guy” — as he got fellow Cubs star and Vegas native Kris Bryant in an offseason batting practice prank.

Bryant, under the impression he was doing a baseball workout video before leaving for spring training, instead first was bemused by the Red Bull video crew's "Sound Guy" who offered "pine tar … hand sanitizer?" and eventually stepped in as a replacement BP pitcher who had Bryant laughing — "He's pretty good" — not to mention off-stride with an assortment of curveballs.

Only after the "Sound Guy" asked for an autographed bat was Bryant clued in that the dude with the boom mic, long hair, mustache and goatee was, yes, Maddux, a.k.a. "The Professor," and Bryant had been schooled.